StarTech PEX20000SFPI Dual-Port 10GbE SFP+ PCIe 2.0 Network Interface Card

Overview

The StarTech PEX20000SFPI is a dual-port 10 Gigabit Ethernet network interface card built around the Intel 82599 chipset — a proven, broadly compatible silicon choice that integrates cleanly with enterprise operating systems, hypervisors, and storage fabrics without driver drama. It drops into any PCIe 2.0 slot, delivers up to 20 Gbps of aggregate throughput across its two SFP+ ports, and ships in a standard profile bracket that fits full-height servers and workstations. If you're connecting a video surveillance NVR, storage node, or high-throughput workstation to a 10GbE network switch, this card is a direct path to doing it with fiber or DAC cable flexibility rather than locked-in copper.

The SFP+ cage form factor means you choose your physical layer — short-reach OM3/OM4 fiber, long-reach single-mode, or direct-attach copper (DAC) twinax — without committing to a cable type at purchase. That's meaningful in data center and IDF closet installs where fiber plant varies room to room.

Key Features

• 20 Gbps Aggregate Bandwidth via PCIe 2.0: Two 10GbE SFP+ ports running simultaneously push up to 20 Gbps total — enough headroom to stream uncompressed or minimally compressed 4K video from multiple cameras to storage without saturating the link. PCIe 2.0 x8 provides roughly 32 Gbps of bus bandwidth, so the NIC itself is never the bottleneck.
• Intel 82599 Chipset: The 82599 is one of the most widely driver-supported 10GbE controllers in existence. Linux (ixgbe driver), Windows Server, VMware ESXi, and Hyper-V all recognize it natively or with minimal configuration — reducing deployment risk on mixed-OS infrastructure and avoiding the compatibility surprises common with lesser-known silicon.
• Dual SFP+ Interfaces: SFP+ is a transceiver cage standard, not a locked cable type. Install an SR transceiver for up to 300m on OM3 fiber, an LR transceiver for single-mode runs up to 10km, or a passive DAC cable for short rack-to-rack connections under 7m — all from the same port. This makes the network adapter equally at home in a telecom closet or a dense server rack.
• 15K Jumbo Frame Support: Supporting jumbo frames up to 15,360 bytes reduces CPU overhead on large data transfers — particularly relevant for NFS or iSCSI storage traffic to NVRs pulling video off a SAN, or for backup streams moving large video files. Standard 1500-byte frames require far more CPU interrupt cycles for the same throughput; 15K frames cut that overhead significantly on bulk transfers.
• IEEE 802.3ae and 802.3aq Compliance: 802.3ae covers 10GBase-LR/SR/ER (fiber), and 802.3aq covers 10GBase-LRM for legacy multimode fiber. Compliance with both means the card works with a wider range of installed fiber plant, including older 62.5µm multimode runs that 802.3ae-only cards struggle with on longer distances.
• Standard Profile Form Factor: The card ships in standard (full-height) profile, fitting tower workstations and 1U/2U rack servers with full-height slots. Physically, at 5.1 in × 2.2 in, it fits comfortably in half-length PCIe slots — common in 1U platforms where card real estate is tight.
• Operating Range 5°C to 50°C: Rated for typical data center and server room environments. The 5–50°C operating window covers standard conditioned rack spaces comfortably; if you're deploying in an unconditioned environment (edge closet, industrial server cabinet without active cooling), verify ambient temps stay below 50°C before installing.

Integration and Compatibility

The PEX20000SFPI is designed for servers and workstations with an available PCIe 2.0 (or later — PCIe is backward/forward compatible at the electrical level) x8 or x16 slot. The Intel 82599 controller is supported natively under most enterprise operating systems — confirm your OS version against Intel's driver matrix if running non-mainstream distributions. For network video recorders or storage servers handling high-camera-count deployments, pairing this card with a 10GbE-capable core switch eliminates the 1GbE bottleneck that limits simultaneous high-bitrate stream ingestion.

SFP+ transceivers are sold separately — the card ships without transceivers or cables. Select transceivers rated for your fiber type and distance, or specify a DAC cable length for rack-adjacent connections. Third-party SFP+ modules are generally compatible with the 82599, but confirm with your vendor if using branded modules with lock-out firmware. For complete 10GbE infrastructure planning, the 10GbE switch on the other end of the link needs matching SFP+ ports or uplinks.

At 3.5 oz, the card adds negligible weight to any server chassis. Storage temperature range of -20°C to 60°C means it can be warehoused or shipped in unheated environments without concern.

Frequently Asked Questions

Q: What PCIe slot does the PEX20000SFPI require?

A: The card uses PCIe Rev 2.0 and fits in any x8 or x16 PCIe slot. PCIe is backward and forward compatible at the physical level, so it will also work in PCIe 3.0 or 4.0 slots at PCIe 2.0 speeds.

Q: Do SFP+ transceivers or DAC cables come included?

A: No. The PEX20000SFPI ships with the card and bracket hardware only. You'll need to source SFP+ transceivers or DAC cables separately, matched to your fiber type, distance, and switch compatibility requirements.

Q: What is the maximum jumbo frame size supported?

A: The card supports jumbo frames up to 15,360 bytes (15K). This reduces CPU overhead significantly on bulk data transfers like NFS or iSCSI storage traffic compared to standard 1,500-byte MTU.

Q: What operating systems support the Intel 82599 chipset used in this card?

A: The Intel 82599 is natively supported under Linux (ixgbe driver), Windows Server, VMware ESXi, and Microsoft Hyper-V, among others. Check Intel's driver support matrix for your specific OS version to confirm.

Q: What is the warranty on the PEX20000SFPI?

A: StarTech covers the PEX20000SFPI with a 2-year manufacturer warranty.

Q: Can this card be used in a low-profile server chassis?

A: The PEX20000SFPI ships with a standard (full-height) profile bracket. It measures 5.1 in × 2.2 in. If your chassis requires a low-profile bracket, verify with StarTech whether a compatible bracket is available for this model.

Ted Perry

The PEX20000SFPI is the card I recommend when an integrator is building out a high-camera-count NVR server and the 1GbE onboard NIC is already showing utilization spikes during multi-stream recording. The Intel 82599 chipset is the reason this card earns its keep in enterprise environments — driver support is mature across every major hypervisor and OS, which means you're not debugging kernel modules at 2AM during a go-live.

Technical Highlights:

• 20 Gbps Aggregate Throughput: Two independent 10GbE SFP+ ports give you 20 Gbps total — enough to simultaneously ingest high-bitrate streams from dozens of cameras and push data to a NAS or SAN over iSCSI without link saturation.
• 15K Jumbo Frame Support: On storage-heavy workloads (iSCSI, NFS, large video file transfers), enabling 15K MTU cuts the number of CPU interrupts per gigabyte transferred — measurable CPU headroom savings on a server that's also running VMS analytics.
• PCIe 2.0 Bus Interface: At PCIe 2.0 x8, the bus delivers roughly 32 Gbps of theoretical bandwidth — headroom above the card's 20 Gbps wire capacity, so the bus itself never throttles the link under full dual-port load.

Deployment Considerations:

• The card ships without SFP+ transceivers — budget for those separately. For rack-adjacent connections under 7m, passive DAC twinax is the most cost-effective path. For longer fiber runs, specify SR (OM3/OM4, up to 300m) or LR (single-mode, up to 10km) transceivers based on your plant.
• Operating temperature tops out at 50°C — fine for a conditioned server room, but verify ambient temps in edge or industrial enclosures before deploying. A server cabinet without active cooling in a warm plant floor can push past that threshold.

For a surveillance NVR server recording 64+ channels of 4K H.265 video and simultaneously writing to a 10GbE iSCSI SAN, the PEX20000SFPI gives you the dual-link capacity and the chipset maturity to handle that workload without reaching for specialty hardware.